含阻燃特性原子多元醇对硬质聚氨酯性能的影响

Influence of Flame-Retardant Atom-Containing Polyols on Properties of Rigid Polyurethane

基于市场上现有的商业化原材料,通过改变硬质聚氨酯泡沫配方中多元醇的类型,寻找最佳阻燃性能的配方.选取常规高羟值聚酯多元醇A、常规低羟值聚酯多元醇B、含氮聚酯多元醇C、含溴和氯阻燃聚醚多元醇D、含溴阻燃聚醚多元醇E作为硬质聚氨酯泡沫配方中的多元醇组分,通过测定泡沫氧指数等阻燃性能,来研究多元醇对硬质聚氨酯泡沫阻燃性能的影响.结果表明:由于含氮聚酯多元醇C结构中含有三(2‑羟乙基)异氰脲酸酯基团,同时具有氮和异氰脲酸酯的阻燃特性,因此其制得的硬质聚氨酯泡沫氧指数达到27.5%,阻燃性能最佳,同时具有环保、低毒的优点.

Rigid polyurethane formulation with better flame retardancy was designed by changing the type of polyol in the formulation of rigid polyurethane based on current commercial raw materials.Selected high hydroxyl value conventional polyester polyol A,low hydroxyl value conventional polyester polyol B,nitrogen-containing polyester polyol C,chlorinated and brominated flame-retardant polyether polyol D and brominated flame-retardant polyether polyol E were used as the part of the polyol in the formulation.The influence of polyol formulation on the flame retardancy of rigid polyurethane insulation material was studied by testing oxygen index etc.The results show that nitrogen-containing polyester polyol C which contains tris-2-hydroxyethyl-isocyanurate provides rigid polyurethane foam with better flame retardancy property and its oxygen index is 27.5%due to flame retardancy of both nitrogen and polyisocyanurate foam,meanwhile,it is green and low toxic.